Bottom board for foundry flasks



Feb. 7, 1928. V 1,658,456

J. B. MEYER BOTTOM BOARD FOR FOUNDRY FLASKS Filed July21, 1927 Patented Feb. 7, 1928.

warren STATES PATENT orrlcs.

JOHN B. MEYER, on nUBUenn, nssienon ro urns ADAMS COMPANY, or

Duncan's, town, A cosrona'rron or IowA.

BOTTOM BOARD FOR FOUNDRY FLASKS.

Application filed my 21,

This invention relates to foundry flasks and especially to bottom boards therefor. More specifically the invention pertains to a bottom board for molding flasks, so de signed that the operator may more easily lift the board.

In devices of this character it is necessary that the bottom board he of sufficient rigidity and durability to withstand the rough usage to which it is subjected in foundry work, yet comparatively light in weight and relatively inexpensive in production. It is also extremely desirable that the board beso designed that the operator may readily grasp and lift it for transportation from one point to another.

One of the objects of thepresent invention is'the provision of a metallic bottom board for the purposes set forth, which is of sufficient lightness to permit easy transportation. and yet is of sufficient rigidity and durability.

Another object of the invention is the provision of a board equipped-with vfinger grips composed of a materialw-hich is an inferior conductor of heat, whereby the operator may more comfortably grasp and lift the board. v V o Other objects of the invention will be made apparent in the following specifications, when read in connection with the accompanying drawings forming a part there of. I

In said drawing-s:

Fig. 1 is a perspective view of a bottom board embodying my invention.

Fig. 2 is a section taken on the line 22 of Fig. 1, and,

Fig. 3 is a section taken on the line 3 -3 of Fig. 1.

Now referring specifically to the drawings, in which like reference numerals indicate like parts throughout- -the several views, the board comprises a steel plate 1 of rectangular formation, provided with downturned integral flanges 2 on its ends, and.

3, 3 on its sides. The top 4 of the board is provided with'a plurality of perforations 5 to decrease the weight of the board without, sacrifice of durability. 7

As clearly illustrated in Fig. 2 a plurality of battens 6 extend along the bottom surface of the top 4, the battens being char,-

1927. Serial No. 207,420.

nel shaped, and provided with flanges 7, 7 which are preferably spot-welded to the lower surface of the top 4. It will he noted be composed of a material which is practically a non-conductor of heat, for reasons which willhereinafter appear, and the strip 8 may be formed of any suitable material which fulfills such requirements.

The strip 8 is located in the recess formed between the adjacent flange 2, on one side, and the batten 6 on the-other side, and is secured inposition by means of a Z-shaped clip 9. having one of its flanges 10 spot welded to the bottom of the board 1, and the other flange extended below and supporting the said strip 8. one 'of the c ips 9 being positioned at each end of said strip. Each of the flanges 2. 2 is provided with an arcuate cut-away portion 11, as illustrated most clearly in Figs. 1 and. 3, to permit access of the fingers of the operator when it is desired to shift the board. 7

It will be understood that bottomboards for foundry flasks are frequently shifted from point to'point. and that they are constantly being subjected to considerable heat. Because of the lack of durability of the wooden bottom boards formerly used. and their tendency to warp, the present" trend is to the utilization ofboards formed of metal. In actualnsage of a metal board however, it becomes very hot during the molding work and the operatorcannot handle it comfortably. In the present invention it is apparent that the board may be handled without any discomfort whatsoever, the fingers of the operator being inserted through the arcuate-cut-away portions 11, and pressing against the bottom of the wooden strips 8 fail to contact any heated metal. 'Modifications of the structure herein disclosed may be suggested to those skilled in the, art, but my invention coversall embodiments falling fairly within the scope of the appended claim.

I claim:

A bottom board for molding flasks, composed of metal and carrying downturned end flanges provided with slots, 21 member of low heat conductivity carried on the lower surface of said board, adjacent each of said flanges, and metallic clips secured to said board each clip embracing one of 10 said members.

In testimony whereof I zifii); my signature.

JOHN B. MEYER. 

